Internal combustion engine



Nov. 10, 1931. 5. J. VELTON INTERNAL COMBUSTION ENGINE Filed Aug. 11. 1950 3 Sheets-sheet 1 Inventor Attorney NOV. 10, 1931, 5 J VELTQN 1,831,150

INTERNAL COMBUSTION ENGINE Filed Aug. 11. 1930 3 Sheets-Sheet 2 Invenlor A (forncy Nov, 10, 1931. s ,1. VELTON} 1,831,150

INTERNAL COMBUSTION ENGINE Fil ed Aug. 11, 1930 3'Shets-Sheet 3 Inventor A Ilomey Patented Nov. 10, 1931 PATENT, OFFICE s'rnrnmr J. VELTON, ornousroiv, TnxAs INTERNAL COMBUSTION ENGINE Application filed August 11, 1930. Serial No. 474,510.

This invention relates to certain new and useful improvements in internal combustion engines and has more particular reference to an internal combustion-engine equipped with eight cylinders.

A primary object of the invention is, therefore to provide an eight cylinder internal combustion engine, wherein the pistons operable in the cylinders are arranged in pairs and the cylinders of the respective pairs operate simultaneously during their suction and power strokes.

With the above and numerous other objects in view, as will be apparent as the description proceeds, the invention consists in the novel combination and arrangement and construction of parts hereinafter described in detail, shown in the accompanying draw-.

ings, and claimed.

In the drawings: I

Figure 1 is a top plan View of the improved internal combustion engine.

Figure 2 is a vertical longitudinal sectional view therethrough;

Figure 3 is a vertical transverse sectional View therethrough.

Figure 4 is a plan View of one section of a sectional clamping arm. 1

Figure 5 is a fragmentary detail view, partly in section and partly in elevation, for more clearly illustrating the application of the sectional clamping arm.

With reference more in detail, to the drawings, it will be seen that the internal combustion engine designated generally by the reference character E comprises a suit able cylinder block 1, crank case 2,- and cylinder head 3. The cylinder head is suitably focused onto the block 1 as at 4.

Arranged in the cylinder block 1 is a plurality of cylinders 5 and6 arranged on opposite sides of the cylinder blockand the cylin ders 5 and 6 are arranged in pairs, there being one cylinder 5 and one cylinder 6 to each pair of cylinders. 1

There are four of such pairs of cylinders 5 and 6, thus providing eight cylinders for the internal combustion engine; The cylinder head C is provided with a plurality of longi- O tudinally spaced internal recesses or combustion chambers 7, there being four of said combustion chambers 7, there being one combustion chamber 7 common to a pair of cylinders 5 and 6. v

Arranged on opposite sides of each combustion chamber 7 are spark plugs 8 and 9, there being one spark plug 8 for each cylin der 5 and one spark plug 9for each cylinder 6.

vMounted for reciprocation in the cylinders 5 and 6are pistons 10 and 11 and each of the pistons includes a piston rod 12, provided ateach lower end with an enlarged head 13. r

A two-part clamp designated generally by the reference character 14, connects the head 13ofa pairof piston rods 12. Said clamp 14 Comprises a pair of 'complemental sections 15, that are clamped together at their ends through the medium of suitable bolt and nut fastening elements 16. Each of the parts 15 inwardly thereof is provided with a recess 17 for accommodating a portion of a head 13, and a vertically disposed semi-cylindrical bore 18, leads upwardly fromthe recess 17 for accommodating a portion of the piston rods 12. Thus, it will be apparent that when the parts or sections 15 of the clamping rods 14 are in assembled relation, the pockets 17 mate for accommodating the head 13 of the piston rod 12 to be connected together, while p the bores 18 mate for rods 12.

The clamping rods 14 extend transversely of the cylinder block, below the cylinders 5 accommodating the and 6 and are adapted for vertical reciprocatory movement in said cylinder block. Each of the sections 15 of the clamping members 14 intermediate the ends thereof has depending from the lower edge thereof a semi-circular or arcuate apertured portion 19, and these apertured portions 19 sit within the upper forked end of a link 20, which end of the link is pivotally connected through the portion 19 through the medium of a suitable bolt 21'. a J

The links 20 connect the coupling members 14 with the cranks 22 of a crank shaft 23, journaled in the crank case 2. The crank shaft 23 adjacent its rearward end and inter-' intake ports 25, there being one pair. ofports.

for each of said pairs of cylinders 5 and 6 and each pair of ports 25 including one'intake port for the cylinder 5 and one intake port for the cylinder 6 of the respective pairs of ports. Likewise, on the opposite side thereof, said cylinder block and cylinder head are provided to cooperate in forming exhaust ports 26, the. exhaust ports being also arranged. in pants, there being one pair of said exhaustiports for the pair of cylinders 5 and 6, as is apparent.

Suitably bolted to the cylinder block and cylinder headas at 27: and 28 is an intake man,- ifold, which includespairsof vertically-disposed piston valves 29, there being one piston valve 29 for each of the intake ports 25.

The piston valves 29 control passage of fluid from a common intake manifold pipe 30 intothe cylindersb and 6.tl11'OUghzthG:PZIS-' sages 25. Each: of the piston valves 29in cludes a vertically disposed cylinder, havingports registering with the intake pipe 30 and the ports 25, and controlling the ports of the cylinder is a piston 31, mounted for. reciprocationwithin the cylinder. Eachof. the pistons31v include a piston rod. 32, that slidably extends through the lower ends of said cylinder.

At said lower ends, each of the piston rods 32 is provided with a suitablehead for riding over the peripheral surface of cams 33, mounted on a horizontal: cam shaft 34, sup ported horizontally and. laterally with respect to the cylinder block through the medium of suitable brackets 35 that extend out;- wardly from the side of; the cylinder block.

The exhaust manifold.structure onzthe opposite side of the cylinder blocl z and'headis substantiallythe same as the intake-manifold structure, and said exhaust manifold structure comprises a plurality of-pairs of exhaust valves 36, each including a cylinder '37, the cylinders 37 of the valves 361 com municating with a common. exhaust pipe 38. Arranged in the cylinders36 for controlling the passage of the exhaust gases from the port 26, through the cylinders andinto the exhaust pipe 38 are reciprocably mounted pistons 39, that at piston. rods- 40 extending slidably through the lowerends of. the'cyl inders. The lower ends-of the pistonrods 40 are provided with suitableheads ridable over the cams 33 mounted on a suitable camshaft 3 ft horizontally supported laterally with respect to the adjacent sides of the cylinder block through. the medium of the brackets 35.;

For maintaining at all times the heads of the piston rods 32, and 40 in engagement with the cams 33 and 32 there is convoluted about each of the piston rods a suitable coil spring 4C1, that at its upper end bears against the lower end of the adjacent cylinder, and at its lower endbears against; a suitable-collar 42 formed on the respective piston rods.

Any. suitable source of power (not shown) is utilized for rotating the cam shafts 34:, 3%"in'suitabletiined"relation with respect to onev another and. with respect to the pistons 10 and 11.

Itisapparent: that, an internal combustion engine of this character operates on the fourcyole system, and that eaclrpair of pistons;10

and l l operate simultaneously Wltllli respect; tonne-another and that the nespe'ctivep'airsof pistons operate III-SLllUilblG tamed: uelatuon;

that innthe present-invention,.foreachrpiston,. there 18 provided. a. separate and. distinct;

spark plug, and that the spark plugsbein'g: arranged in pairs wills i gnite the? fluid; compressed in the compression chamber. 74,. upon: the upstroke ofa pair of. pistons lllsand 131;,

The principal. effect. of: this arrangement? is-in the provisioirofz a more powerfirlengi no, productive of! maximum power with. a: minis mum amount of wear.

lVhat is claimed is:

'1, An internalcombustionengine comprising, in combination,.a plurality; of; cylinders,- pistons: openable in. the cylinders, a crank shaft, means operatively. connecting said pistons in. pairs to i the cranks of said. crank shaft, a combustion chamber. commonito'tlie cylinders: of' the respective pairs of: pistons, and a pair of spark plugsarranged. one to each side of each of? said: combustioni chambers, anintake manifold, a. pairof: inlet. ports conneotingth'e cylinders off the respective pairs with said intake manifold,vani exhaust manifold', apair of exhaust passages connecting the cylinders of" the respective pairs. of cylinders with said; exhaust; manifold,. and valve means for controlling said; intake" pas sagesandl'said exhaust passagesrespectively;

2; An internalcombustion: engine compris ing in combination a.cylinderblocln ai plural ity of cylinders arrangedrin: said; cylinder block, pistonsopera'ble insaid:cy.linders,.said pistonsbeing arrangediin.pairs,a crank-= shaft, meanszoperatively connecting the pistons of the respective pilll's ofxpistonsto thecranks of the crank shaft, whereby therpist'ons ofz the respective pairszarw actuatedsimultaneously, a. combustion: chamber: common to each pair of. cylinders, a paiirofsparkzp'lugs arranged one to: each. side of each 'ofsthe'; combustion chambers, there beingonesparlnplug foneaoh llE of said pistons, intake ports on one side of said block, said intake ports being arranged in pairs, there being one pair of intake ports for each pair of cylinders, exhaust ports arranged in the opposite side of said blocks said exhaust ports being arranged in pairs, there being one pair of exhaust ports for each pair of cylinders.

3. An internal combustion engine comprising in combination a cylinder block, a plurality of cylinders arranged in said cylinder block, pistons operable in said cylinders, said pistons being arranged in pairs, a crank shaft, means operatively connecting the pistons of the respective pairs of pistons to the cranks of the crank shaft, whereby the pistons of the respective pairs are actuated simultaneously, a combustion chamber common to each pair of cylinders, a pair of spark plugs arranged oneto each side of each of the combustion chambers, there being one spark plug for each of said pistons, intake ports on one side of said block, said intake ports being arranged in pairs, there being one pair of intake ports for each pair of cylinders, exhaust ports arranged on the opposite side of said block, said exhaust ports being arranged in pairs, there being one pair of exhaust ports for each pair of cylinders, an intake manifold common to said intake ports, an exhaust manifold common to said ports, each of said exhaust manifolds including a plurality of valves, therebeing one valve for each of the ports.

4. An internal combustion engine comprising in combination, a plurality of cylinders, pistons operable in said cylinders, said pistons being arranged in pairs, a crank shaft, means operatively connecting the pistons of the respective pairs of pistons to the cranks of the crank shaft, whereby the pistons of the respective pairs are actuated simultaneously, a combustion chamber common to each pair of cylinders, a pair of spark plugs for each of the combustion chambers, intake ports on one side of said engine, said intake ports being arranged in pairs, there being one pair of intake ports for each pair of cylinders, exhaust ports arranged in the opposite side of said engine, said exhaust ports being arranged in pairs, there being one pair of exhaust ports for each pair of cylinders, an intake manifold common to said intake ports, an exhaustmanifold common to said ports, each of said exhaust manifolds including a plurality of valves, there being one valve for each of the ports, brackets on from opposite sides of said engine, a cam shaft supported on the brackets one to each side of said engine, each of said cam shafts provided with a plurality of cams, there being one cam for each of said valves, and the valves of said intake and exhaust manifold respectively provided with a spring pressed piston valve rod for engagement with a cam, the valve rods of the valves of said intake manifold engaging the cams on one of said cam shafts, and the valve rod a combustion chamber common to the cylinders of the respective pairs, a valve controlled intake manifold on one side of said internal combustion engine, and including aplurality of intake passages, said passages being arranged in pairs, and there being one pair of passagesfor each pair of cylinders, an exhaust manifold on the opposite side of the internal combustion engine, and including a plurality of pairs of exhaust passages, there being one pair of exhaust passages for each I pair of cylinders, and means for igniting the fuel in the respective combustion chambers when the pistons of the respective pairs of pistons complete their compression stroke.

6. An internal combustion engine comprising in combination, a plurality of cylinders, pistons operable in the cylinders, said pistons beingarranged in pairs, means for operatively connecting each pairof pistons with a crank of the crank shaft for simultaneously operating the pistons of the respective pairs, a combustion chamber common to the cylinders of the. respective pairs, a valve controlled intake manifold on one side of said internal combustion engine, and including a plurality of intake passages, said passages being arranged in pairs, and there being one pair of passages for each pair of cylinders, an exhaust manifold on the opposite side of the internal combustion engine, and including a plurality of pairs of exhaust passages, there being one pair of exhaust passages for each pair of cylinders, and means for igniting the fuel in the respective compression chambers when the pistons of the respective pairs of pistons complete their compression stroke, and cam controlled valves for controlling the respective passages of said intake and exhaust manifolds respectively. v

In testimony whereof I affix my signature.

STEPHEN J. VELTON. 

